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yes, you can try them anytime you want. They are the 2 main stones in my rotation right now.

On how they wear... the answer is very slowly. I've had one similar to the current ones i have that have lasted through 3 years of my serious abuse and sharpening and still have about a year left in them. These ones seem to wear a tiny bit faster, but still, for most anyone that is not sharpening professionally, i cant imagine you will run through one anytime soon.

On really coarse work, i still use my wheel (the one i have on now is about 150 grit), but then i follow the 150 grit up with this medium grit and it works great to remove the scratches quickly.

Sounds intriguing, but without seeing it in action it's easy to make up ideas about what it may or may not be. hint hint

If it's diamond, wears slowly and doesn't need flattening, is it something similar to what we know as a standard diamond plate with a cutting matrix bonded to metal surface, or is it more like a traditional water stone but with diamond cutting matrix mixed with a binder to create a solid mass?

Can you compare the course and fine grits to other stones so we can get an idea of what stones they might replace?

Sounds spendy, but if they can be a two-stone solution and last significantly longer than a typical water stone, then there's a lot of value in that.

They are more on the side of traditional stones (but slightly different)... not diamonds plated on a surface. They dont need to be flattened because they wear super slow.

The grits i'm thinking about are 1000 and 6000 for the time being. there are other options i may consider, but these seem to work well together and the 1k is fast enough to get the job done when i need it to.

also, just to mention it so you guys have an idea of how much i've thought this through... i've spent a few thousand dollars on this stone type over the last two years testing various types. There are some that i continue to use in my personal lineup that i think are some of the most amazing stones i've ever used (and i'm continuing to test new ones all of the time). However, many of the stones i have right now would easily run $400+ for a single stone (i have quite a few synthetics that ran me over $600). The reason i asked about this set is that i potentially have an opportunity to provide very good stones of this type at an amazing price compared to what i normally get.

Also, for those thinking about the flattening part, the absolute maximum worst possible unflat situation these stones would see would be 1mm of difference from the highest spot to the lowest... and that would take you well over a year of every day use to get that way. Even in 3 years, mine arent that way. It would have to be through gross misuse.

For a professional that sharpens multiple knives, at least weekly, this seems like a dream stone. For someone on a budget and never spent more that $130 on a set of stones, there is a defenite leap of faith needed by the buyer.

They are more on the side of traditional stones (but slightly different)... not diamonds plated on a surface. They dont need to be flattened because they wear super slow.

The grits i'm thinking about are 1000 and 6000 for the time being. there are other options i may consider, but these seem to work well together and the 1k is fast enough to get the job done when i need it to.

INteresting choice of grits .... I purchased the Naniwa Diamond series 1,000 and 6,000 grit just for the single bevel knives as no levelling required. Just some clean up which I use a broken fine stone.

This removes the hernia of levelling exercise and saves time . But there is very little feedback from the plate . It gets the job done fast. I wld recommend such a plate of 1,000 grit for the Hollow side of the knife (ura) and as for teh curved side.. i am not too particular as my regular slightly concave stones can do.. unless I need precision and full control say it is a new knife.

yeah... these have significantly better than the naniwa. In fact, i gave up on diamond stones after the naniwa... it took me until a craftsman in japan had me try the one he uses before i decided to give this type of stone another shot.

These two particular stones are not the best in terms of feedback compared to some that i use, but they arent bad either.

*as a side note, for some reason, all of the manufacturers that i've seen make very similar looking stones... kind of frustrating... its forced me to mark stones on the sides so that i can keep track of what is what